Re-run validation automatically upon merging fetched remote data into the history

modules/core/context.js

@@ -465,6 +465,12 @@ export function coreContext() {
             issueManager.validate();
         }
     });
+    // re-run validation upon merging fetched data
+    history.on('merge', function(entities) {
+        if (entities && entities.length > 0) {
+            issueManager.validate();
+        }
+    });
 
     // Debounce save, since it's a synchronous localStorage write,
     // and history changes can happen frequently (e.g. when dragging).

modules/core/history.js

@@ -32,7 +32,7 @@ import {
 
 
 export function coreHistory(context) {
-    var dispatch = d3_dispatch('change', 'annotatedChange', 'undone', 'redone');
+    var dispatch = d3_dispatch('change', 'annotatedChange', 'merge', 'undone', 'redone');
     var lock = utilSessionMutex('lock');
     var duration = 150;
     var _imageryUsed = [];
@@ -144,6 +144,7 @@ export function coreHistory(context) {
             _tree.rebase(entities, false);
 
             dispatch.call('change', this, undefined, extent);
+            dispatch.call('merge', this, entities);
         },